package servlet;


import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;

/**
 * @author 石小俊
 */
// Servlet代码不能像以前一样通过main方法运行
// 而是通过服务器进行运行,启动服务器之后在浏览器地址栏进行访问
// urlPatterns用于指定访问命令,该命令必须以/开头
@WebServlet(urlPatterns = "/sayHello")
public class HelloServlet extends HttpServlet {

    @Override
    protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        PrintWriter out = response.getWriter();
        out.println("<h1 style='color:red;'>Hello World</h1>");
    }
}
